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BOOMERANG acoustic-peak measurement 2026-10-18
BOOMERANG's 1998 Antarctic balloon flight scanned a low-dust region with a microwave telescope near and bolometers at . Ground beam measurements and microwave angular dipole calibration connected signals to sky temperature. Frequency-map and time-split differences tested contamination. The 2000 paper fitted the Cosmic microwave background power spectrum, finding at one standard deviation. Its near-flat-geometry inference used a chosen model family and parameter priors; secondary peaks were not yet established.[ref]
A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation by P. de Bernardis and others. de Bernardis et al. (2000), PDF pp.3–9: apparatus, controls, peak fit
P. de Bernardis Created 2026-10-18 Updated 2026-11-05
P. de Bernardis coauthored maps of cosmic microwave background temperature variations at four observing frequencies. Their angular power spectrum peaked near multipole , supporting a spatially flat cosmological model within the paper's cold dark matter interpretation.[ref]
A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation by P. de Bernardis and others. Author list and abstract, corresponding to Nature 404 (2000), pp. 955–959: four-frequency maps, peak multipole and qualified flat-universe interpretation.